Improvement in subsoil-plows



A. A. PORTER.

I SUBSOIL PLOW. No.184,171, Patented'Nov 7,1876;

INVENTOR UNITED STATES PATENT OFFICE.

ARGHIBALD A. PORTER, OF GRIFFIN, GEORGIA.

IMPROVEMENT IN SUBSOlL-PLQWS.

Specification forming part of Letters Patent N 0. 184,171, datedNovember 7, 1876; application filed May 10, 1876.

plow and pulverizer, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure 1 is a perspective view of my subsoiler and pulverizer. Fig. 2 isa similar view, showing a land-side and'mold-board attached thereto.Figs. 3, 4, and 5 are perspective views of detached parts thereof.

A represents the plow-beam, with handles B B, constructed in the usualmanner. 0 represents the plow foot or standard, made of a plain bar ofwrought-iron, drawn to a point at U, and given the proper curve. Theupper end of this standard passes through a mortise in the beam A, andmay be adjusted up or down, as required, and held at any point by meansof a pin, a, passing through the beam and the standard. The standard 0is heldrigid by means of a front colter, D, and back brace D, curved asshown, their lower ends being secured on opposite sides to the stand--ard by a single bolt, b, and their upper ends passing through mortisesin the plow-beam, and therein adjusted and held by pins d d. On eachside of the standard 0, near the point 0, is secured a blade, G, whichforms the subsoiling-wings, and above the same, on 7 each side of thestandard, are attached several plates, G, as many as may be necessary,forming the pulverizing-wings. These blades or wings are set at varyingangles on the plowstandard, the lower blades G G subsoiling the ground,and the blades G G pulverizing the same from one to three feet, keepingit from breaking in clods. The blades are, at their inner ends, providedwith downward-projecting flanges ff, through which bolts h are passed tofasten the blades to the standard. The subsoiling-blades G are held fromturning by said flanges coming against shoulders won the standard, whilethe pulverizing-blades standardfor instance, as shown in Fig. 2,

where a mold-board, H, and land-side bar I are fastened to the standardby providing said parts with suitable lugs, throughwhich the bolts h arethen passed. A sweep, scraper, and other attachments may also be used,if desired.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, isv 1.Thecombination, with the mortised plowbeam A, of the adjustable standard0, adjustable colter D, and the adjustable brace D, the colter and bracebeing connected on opposite sides of the standard, and all three held inthe mortised plow-beam by pins ad, as'and for the purposes herein setforth.

2. The combination, with the standard or foot 0, having shoulders 00, ofthe blades G G, secured on opposite sides in rear of said shoulders, andthe wings G, provided with the downward-projecting flanges f f and lugsguy, and all connected by the'bolts h, substantially as and for thepurposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this4th day of April, 1876.

ABOHIBALD A. PoET'EE.

